"bu" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en indo-européen commun",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en proto-celtique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en vieux breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en breton incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "buez"
    },
    {
      "word": "bugelenn"
    },
    {
      "word": "bugen"
    },
    {
      "word": "buocʼh"
    },
    {
      "word": "buorzh"
    }
  ],
  "etymology_texts": [
    "Du vieux breton bu (« cheptel »), issu du proto-celtique *bōws « vache, bétail », qui remonte à l’indo-européen commun *gʷōws.",
    "À rapprocher de bu « vache », pl. biw en moyen gallois, bó en irlandais, bo- en gaulois (sens identique)."
  ],
  "forms": [
    {
      "form": "bioù",
      "tags": [
        "plural",
        "unmutated"
      ]
    },
    {
      "form": "vu",
      "tags": [
        "singular",
        "mutation-soft"
      ]
    },
    {
      "form": "vioù",
      "tags": [
        "plural",
        "mutation-soft"
      ]
    },
    {
      "form": "pu",
      "tags": [
        "singular",
        "mutation-hard"
      ]
    },
    {
      "form": "pioù",
      "tags": [
        "plural",
        "mutation-hard"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en breton de la zoologie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en breton de l’élevage",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes vieillis en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Bête à cornes."
      ],
      "id": "fr-bu-br-noun-3XtRqMxP",
      "raw_tags": [
        "Élevage"
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "zoology"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈby\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "bu"
}

{
  "categories": [
    "Mots en breton issus d’un mot en indo-européen commun",
    "Mots en breton issus d’un mot en proto-celtique",
    "Mots en breton issus d’un mot en vieux breton",
    "Noms communs en breton",
    "breton",
    "Étymologies en breton incluant une reconstruction"
  ],
  "derived": [
    {
      "word": "buez"
    },
    {
      "word": "bugelenn"
    },
    {
      "word": "bugen"
    },
    {
      "word": "buocʼh"
    },
    {
      "word": "buorzh"
    }
  ],
  "etymology_texts": [
    "Du vieux breton bu (« cheptel »), issu du proto-celtique *bōws « vache, bétail », qui remonte à l’indo-européen commun *gʷōws.",
    "À rapprocher de bu « vache », pl. biw en moyen gallois, bó en irlandais, bo- en gaulois (sens identique)."
  ],
  "forms": [
    {
      "form": "bioù",
      "tags": [
        "plural",
        "unmutated"
      ]
    },
    {
      "form": "vu",
      "tags": [
        "singular",
        "mutation-soft"
      ]
    },
    {
      "form": "vioù",
      "tags": [
        "plural",
        "mutation-soft"
      ]
    },
    {
      "form": "pu",
      "tags": [
        "singular",
        "mutation-hard"
      ]
    },
    {
      "form": "pioù",
      "tags": [
        "plural",
        "mutation-hard"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en breton de la zoologie",
        "Lexique en breton de l’élevage",
        "Termes vieillis en breton"
      ],
      "glosses": [
        "Bête à cornes."
      ],
      "raw_tags": [
        "Élevage"
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "zoology"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈby\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "bu"
}